Stoelting SO212 User manual

Model SO212
OPERATORS MANUAL
Manual No. 513610 Rev.2

This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifications are not binding in detail. We reserve the right to make
changes to the machine without notice, and without incurring any obligation to modify or pro-
vide new parts for machines built prior to date of change.
DO NOTATTEMPT to operate the machine until instructions and safety precautions in this
manual are read completely and are thoroughly understood. If problems develop or questions
arise in connection with installation, operation, or servicing of the machine, contact Stoelting.
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: [phone]
Fax: [phone]
Customer Service: 888.429.5920
Fax: [phone]
Email: [email protected]
© 2014 PW Stoelting, LLC
stoeltingfoodservice.com

Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious per-
sonal injury. The message that follows the symbol
contains important information about safety.
Signal Word:
Signal words are distinctive words used throughout
this manual that alert the reader to the existence and
relative degree of a hazard.
CAUTION
The signal word “CAUTION” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate injury and equipment/property
damage.
A Few Words About Safety
Safety Information
Read and understand the entire manual before
operating or maintaining Stoelting equipment.
This manual provides the operator with information
for the safe operation and maintenance of Stoelting
equipment. As with any machine, there are hazards
associated with their operation. For this reason safety
is emphasized throughout the manual. To highlight
specific safety information, the following safety defini-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your at-
tention to possible dangers. The safety symbols, and
their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions
or warnings they give are not substitutes for proper
accident prevention measures.
If you need to replace a part, use genuine Stoelting
parts with the correct part number or an equivalent
part. We strongly recommend that you do not use
replacement parts of inferior quality.
WARNING
The signal word “WARNING” indicates a potentially
hazardous situation, which, if not avoided, may result
in death or serious injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” not preceded by the
safety alert symbol indicates a potentially hazardous
situation, which, if not avoided, may result in equip-
ment/property damage.
NOTE (or NOTICE)
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety of personnel or equipment/property.

SECTION DESCRIPTION PAGE
1. INTRODUCTION
1.1 Description............................................................................................................. 1
1.2 Specifications ........................................................................................................ 2
2. INSTALLATION INSTRUCTIONS
2.1 SafetyPrecautions ................................................................................................. 3
2.2 ShipmentandTransit.............................................................................................. 4
2.3 FreezerInstallation ................................................................................................. 4
2.4 InstallingPermanentWiring .................................................................................... 5
3. INITIAL SET-UP AND OPERATION
3.1 Operator'sSafetyPrecautions................................................................................ 7
3.2 OperatingControlsandIndicators........................................................................... 7
3.3 Sanitizing ............................................................................................................... 8
3.4 FreezeDownandOperation................................................................................... 9
3.5 MixInformation ....................................................................................................... 10
3.6 RemovingMixFromFreezer .................................................................................. 10
3.7 CleaningTheFreezer............................................................................................. 11
3.8 Disassembly of Freezer Parts ................................................................................ 11
3.9 CleaningThe FreezerParts.................................................................................... 12
3.10Sanitize FreezerandFreezerParts ....................................................................... 12
3.11AssemblyofFreezer ............................................................................................. 13
3.12RoutineCleaning................................................................................................... 13
3.13PreventiveMaintenance ........................................................................................ 15
3.14Extended Storage ................................................................................................. 15
4. TROUBLESHOOTING................................................................................................ 19
5. REFERENCE DRAWINGS......................................................................................... 19
TABLE OF CONTENTS

LIST OF ILLUSTRATIONS
FIGURE TITLE PAGE
1-1 ModelSO212Freezer............................................................................................ 1
1-2 Specifications ........................................................................................................ 1
2-1 WarningLabelLocations ....................................................................................... 3
2-2 Leveling ................................................................................................................. 4
2-3 SpaceandVentilationRequirements ..................................................................... 4
2-4 Electrical Plug ....................................................................................................... 4
2-5 PowerCordConnection ......................................................................................... 5
3-1 Controls ................................................................................................................. 7
3-2 MixInletRegulator ................................................................................................. 9
3-3 SanitizingHopper .................................................................................................. 9
3-4 DispensingProduct ...............................................................................................10
3-5 RemovingBlender ..................................................................................................11
3-6 RemovingAugerShaft ...........................................................................................12
3-7 RemovingO-Ring ...................................................................................................12
3-8 CleaningFreezerBarrel .........................................................................................12
3-9 AugerandDoorAssembly .....................................................................................13
5-1 ReplacementParts ................................................................................................19

1
1.1 DESCRIPTION
The Stoelting SO212 floor model freezer is gravity fed.
The freezer is equipped with fully automatic controls to
provide a uniform product. The freezer is designed to
operate with almost any type of commercial shake mix
available. This manual is designed to assist qualified
servicepersonnelandoperatorsintheinstallation,opera-
tion and maintenance of the Stoelting Model SO212
freezer.
SECTION 1
DESCRIPTION AND SPECIFICATIONS
Figure 1-1 Model SO212 Freezer
Figure 1-2 Specifications

2
MODEL SO212
FLOOR MODEL
GRAVITY SHAKE FREEZER
1.2 SPECIFICATIONS
DIMENSIONS:
Freezer: 17.6" (45cm) wide x 28.6" (73cm) deep x 63.75" (162cm) high
Crated: 19.5" (50cm) wide x 33" (84cm) deep x 40" (102cm) high
WEIGHT:
Freezer: 332 lbs. (150kg) Crated: 427 lbs. (193kg)
ELECTRICAL:
Description SO212-38
Voltage AC 1 PH 208/230
Total Run Amps 10.5
Drive Motor 3/4 HP
Compressor 12,000 BTUH (90°F - 0°F)
Use 20 amp HACR circuit breaker.
Automatic safeguard circuit built into electronic control - protects major freezer components under abnormal
operatingconditions.
COOLING:
Air cooled requires minimum 3" (7.6cm) air clearance on back side.
No clearance needed on sides.
HOPPER:
7 Gallons (26,5 liters) refrigerated and insulated.

3
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the freezer until the safety
precautions and operating instructions in this manual are
read completely and are thoroughly understood.
Takenoticeofallwarninglabelsonthefreezer.Thelabels
have been put there to help maintain a safe working
environment.Thelabelshavebeendesignedtowithstand
washing and cleaning. All labels must remain legible for
the life of the freezer. Labels should be checked periodi-
callytobesuretheycanberecognizedaswarninglabels.
SECTION 2
INSTALLATION INSTRUCTIONS
If danger, warning or caution labels are needed, indicate
the part number, type of label, location of label, and
quantity required along with your address and mail to:
STOELTING, INC.
ATTENTION: Customer Service
502 Hwy. 67
Kiel, Wisconsin 53042
Figure 2-1 Warning Label Locations

4
2.2 SHIPMENT AND TRANSIT
Thefreezerhasbeenassembled,operatedandinspected
at the factory. Upon arrival at the final destination, the
completefreezermustbecheckedforanydamagewhich
may have occurred during transit.
With the method of packaging used, the freezer should
arriveinexcellentcondition.THECARRIERISRESPON-
SIBLE FOR ALL DAMAGE IN TRANSIT, WHETHER
VISIBLEORCONCEALED.Donotpaythefreightbilluntil
the freezer has been checked for damage. Have the
carrier note any visible damage on the freight bill. If
concealeddamageand/orshortageisfoundlater, advise
the carrier within 10 days and request inspection. The
customermustplaceclaimfordamagesand/orshortages
in shipment with the carrier. Stoelting, Inc. cannot make
any claims against the carrier.
2.3 FREEZER INSTALLATION
Installation of the freezer involves moving the freezer
close to its permanent location, removing all crating,
setting in place, assembling parts, and cleaning.
A. Uncrate the freezer.
B. Accuratelevelingisnecessaryforcorrectdrainage
of freezer barrel and to insure correct overrun.
Place a level on top of the freezer at each corner
to check for level condition. If adjustment is
necessary,levelthefreezerbyturningthe caster
in or out and tighten the locknut. (Fig 2-2).
C. The freezer is equipped with an air cooled
condenser and requires correct ventilation. The
front of the freezer is the air intake and the back
discharge. Both front and back must have a
minimum of 3" of clearance. (Fig 2-3).
CAUTION
Failuretoprovide adequateventilationwillvoid war-
ranty.
D. Place the OFF-ON switch in the OFF position.
E. Connectthepowercord.Theplugisdesignedfor
208or230volt/20ampduty.Checkthenameplate
on your freezer for proper supply. The unit must
beconnectedtoaproperlygroundedreceptacle.
Theelectricalcordfurnishedaspartofthefreezer
has a three prong grounding type plug (Fig. 2-4).
Theuseofanextensioncordisnotrecommended,
if necessary use one with a size 12 gauge or
heavier with ground wire. Do not use an adapter
to get around grounding requirement.
CAUTION
Do not alter or deform the plug in any way.
F. Install the drip tray, drain tray, hopper cover and
other miscellaneous parts on the freezer.
Figure 2-2 Leveling
Figure 2-3 Space and Ventilation Requirements
Figure 2-4 Electrical Plug

5
2.4 INSTALLING PERMANENT WIRING
If permanent wiring is required by local codes, the follow-
ing procedure must be performed.
WARNING
Disconnect freezer from the source of electrical
supply before servicing.
A. Remove the left side panel and electrical box
cover.
B. Disconnect the wires from the terminal block.
Disconnect the green ground wire from the
grounding stud. (Fig 2-5).
C. Remove the power cord.
D. Install permanent wiring according to local code.
E. Replace the electrical box cover and left side
panel.
Figure 2-5 Power Cord Connections

6

7
Figure 3-1 Controls
3.1 OPERATOR’S SAFETY PRECAUTIONS
Safe operation is no accident; observe these rules:
A. Know the freezer. Read and understand the
operatinginstructions.
B. Notice all warning labels on the freezer.
C. Wearproperclothing.Avoidloosefittinggarments,
and remove watches, rings or jewelry which
could cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stayalert at all times.Know whichswitch, button
or control you are about to use and what effect it
is going to have.
F. Disconnectelectricalcordformaintenance.Never
attempt to repair or perform maintenance on the
freezer until the main electrical power has been
disconnected.
SECTION 3
INITIAL SETUP AND OPERATION
G. Donotoperateunderunsafeoperatingconditions.
Neveroperatethefreezerifunusualorexcessive
noise or vibration occurs.
3.2 OPERATING CONTROLS AND
INDICATORS
Beforeoperatingthefreezer,itisrequiredthattheoperator
know the function of each operating control. Refer to
Figure3-1forthelocationoftheoperatingcontrolsonthe
freezer. For the information regarding flashing indicator
lights, refer to Section 4 - Troubleshooting.
WARNING
The Power OFF-ON switch must be placed in the
OFF position when disassembling for cleaning or
servicing. The freezer must be disconnected from
electricalsupplybefore removing anyaccesspanel.
Mix Low
Indicator
CLEAN
Switch
PUSH TO FREEZE
Switch
Blender
Power Switch
Hold/Ready
Switch
Consistency/
Temperature
Adjustment
OFF-ON
Power Switch

8
A. SPIGOT SWITCH
The spigot switch will automatically activate the
auger drive and refrigeration systems when the
spigot is opened to dispense product (pulled
straight downwards). When the spigot is closed,
the drive motor and compressor will remain “on”
until the product in the barrel reaches the proper
temperature.
The spigot switch will also activate the blender
when pushed to the right (spring loaded). The
blender will operate when product is being
dispensed or when the spigot is closed.
B. POWER OFF-ON SWITCH
The Power OFF-ON switch is a two position
toggleswitch usedto supply power to the control
circuit. When the switch is in the OFF position,
nothing will run. When the switch is in the ON
positionthefreezerwillbeinthe idle mode untila
switch on the control panel is activated.
C. BLENDER OFF-ON SWITCH
The Blender OFF-ON switch is a two position
toggleswitchusedtosupplypowertotheblender.
WhentheswitchisintheOFFposition,thereisno
powertotheblender.WhentheswitchisintheON
position the blender will operate any time the
spigot handle is pushed to the right.
D. PUSH TO FREEZE BUTTON
ThePUSHTOFREEZEbuttonisusedtostartthe
freezing cycle. During initial freeze down, the
PowerOFF-ONswitchisplacedintheONposition.
Then the PUSH TO FREEZE button is pressed
untilthedrivemotorandcompressorareactivated.
NOTE
After the drive motor starts, there is a 3 second de-
lay before the compressor starts.
During the normal operation, the red PUSH TO FREEZE
light will illuminate after the freezer has been idle for the
preset cycles. Before drawing product, press the PUSH
TOFREEZEbuttonifitisilluminated.Waituntilthegreen
light illuminates before dispensing.
NOTE
If the freezer shuts off and the PUSH TO FREEZE
light flashes, an error condition has occured. Turn
thePower OFF-ONswtich tothe OFFposition, cor-
rectthe problemand turn the freezer back on. (See
Section 4 - Troubleshooting.)
E. GREEN LIGHT
Thegreenlightisusedtoindicatethattheproduct
hasreachedthepropertemperatureandisready
to be dispensed.
NOTE
If the red light next to the PUSH TO FREEZE but-
tonisilluminated, press thePUSHTOFREEZE but-
ton and wait until the green light illuminates before
dispensing.
F. CLEAN BUTTON
When the CLEAN button is pushed the
refrigeration system will be off and the auger will
rotate for cleaning. When the button is pushed
again, the auger will stop and the clean light will
flash indicating the freezer is in the clean mode.
ToexitthecleanmodeplacethePower OFF-ON
switch in the OFF position. If the freezer is left in
clean for more than 30 minutes or the CLEAN
button is pushed three times in ten seconds, an
errorwilloccur.Toreset,presstheCLEANswitch
and allow the error light to flash a minimum of 10
minutes.ThenplacethePowerOFF-ONswitchin
the OFF position, wait 5 seconds and place the
switch in the ON position.
G. DRIVE MOTOR OVERLOAD
The internal drive motor overload will trip if the
drive motor is overloaded. It will reset after
approximately 10-12 minutes. If the drive motor
continues to trip, refer to Section 4 -
Troubleshooting.
H. RED MIX LOW LIGHT
The red mix low light is designed to alert the
operator to a low mix condition. The light will
illuminatewithapproximatelyonegallonofmixin
thehopper.Whenthemixlowlight is illuminated,
refill hopper immediately.
NOTE
Failure to refill hopper immediately may result in
operationalproblems.
I. HOLD READY SWITCH
The hold ready switch is a push button switch.
Whenpushedinand held for5seconds,thehold
ready mode will be activated. The product will
remain ready to serve and the freezer will not go
to idle. To return to normal operation push and
hold for 5 seconds.
3.3 SANITIZING
Sanitizing must be done after the freezer is cleaned and
justbeforethehopperisfilledwithmix.Sanitizingthenight
beforeisnoteffective.However,youshouldalwaysclean
the freezer and parts after using it.
WARNING
The United States Department of Agriculture and
the food and drug administration require that all
cleaningandsanitizingsolutionsused with foodpro-
cessing equipment be certified for this use.

9
Whensanitizingthefreezer,refertolocalsanitaryregula-
tions for applicable codes and recommended sanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations. Mix sanitizer
accordingto manufacturer’s instructionsto providea 100
partsper millionstrength solution.Mix sanitizerin quanti-
ties of no less than 2 gallons (7.5 liters) of 120°F water.
Allow sanitizer to contact the surfaces to be sanitized for
5minutes.Anysanitizermustbeusedonlyinaccordance
with the manufacturer’s instructions.
NOTE
Stoelting has found that Stera-Sheen Green Label
does an effective job of properly sanitizing a shake
freezer. We therefore include a sample with each
new freezer. Other products may be as effective.
CAUTION
Prolonged contact of sanitizer with freezer may
cause corrosion of stainless steel parts.
In general, sanitizing may be conducted as follows:
A. With the auger in place, install the mix inlet
regulator into hopper with air inlet (long) tube
toward the front of the freezer (Fig. 3-2).
NOTE
It is recommended to sanitize the freezer without
the blender assembly installed. Once the freezer
has been sanitized, install the blender and sanitize
the blender shaft.
B. Prepare4 gallons(15liters) of sanitizingsolution
followingmanufacturer’sinstructions.Setasidea
large cup of sanitizer solution to sanitize the
blender. Pour the remainder of the solution into
hopper.
C. PlacethePowerOFF-ONswitchintheONposition
and press the CLEAN button. Check for leaks.
D. Clean sides of hopper, mix inlet regulator and
underside of hopper cover using a sanitized soft
bristlebrushdippedinthesanitizingsolution(Fig.
3-3).
E. Afterfiveminutes,placeabucketunderthespigot
andopenspigottodrainsanitizingsolution.When
solution has drained, press the CLEAN button to
stop the auger. Allow the freezer barrel to drain
completely.
F. Installtheblenderassemblytofhefrontdoor,plug
the blender into the outlet on the freezer, and
place the Blender Power OFF-ON switch in the
ON position.
G. Submerge the blender shaft into the large cup
withsanitizersolutionandpushthespigothandle
to the right. Allow the blender shaft to be
submerged for at least 30 seconds.
3.4 FREEZE DOWN AND OPERATION
This section covers the recommended operating proce-
dures to be followed for the safe operation of the freezer.
A. Sanitize just prior to use.
B. Place the Power OFF-ON switch in the OFF
position. NOTE
Make sure the mix inlet regulator and blender as-
sembly are in place before adding mix.
C. With spigot open, pour approximately 1 gallon
(3.8 liters) of fully thawed mix into the hopper.
Allow the mix to flush out about 8 ounces (0.23
liters) of sanitizing solution and liquid mix. Close
the spigot.
Figure 3-2 Mix Inlet Regulator
Figure 3-3 Sanitizing Hopper

10
D. Fillhopperwithapproximately5gallons(19liters)
of pre-chilled (40°F or 4°C) mix.
CAUTION
Do not overfill the hopper. Mix level must not be
higherthan theair inlettube onthe mix inlet regula-
tor.
E. The freezer barrel will automatically fill until it is
about 1/2 full. If freezer barrel does not fill, check
forobstructioninthemixinletregulator.Iffreezer
barrel fills over 1/2 full, check for leaks at the mix
inlet regulator o-ring or check if the mix inlet
regulatorwasinstalledcorrectlyorthatthefreezer
is level.
F. PlacethePowerOFF-ONswitchintheONposition.
Place the Blender Power OFF-ON switch in the
ON position and make sure the blender power
plug is connected to the freezer.
WARNING
Hazardous Moving Parts
Blender shaft and agitator can grap and cause in-
jury.Donotoperateblenderwithoutprotective shield
or swing splash shield.
G. Press the PUSH TO FREEZE button until the
freezer starts. NOTE
After the drive motor starts, there is a 3 second de-
lay before the compressor starts.
H. Afterabout7to10minutesthefreezerwillshutoff
and the green light will illuminate indicating the
productisready to serve.Freezedown timemay
be longer for some mixes. High ambient
temperatures may extend freeze down time.
I. For normal dispensing, pull the spigot handle
down. (Fig. 3-4). Push the spigot handle to the
right to activate the blender. The blender will
operate during dispensing or when the spigot
handle is closed.
CAUTION
Refrigeration is automatically activated when the
spigot is opened (pulled downwards). Close the
spigot completely after dispensing.
J. Thefreezerisdesignedtodispensetheproductat
areasonabledrawrate.Ifthefreezerisoverdrawn,
the result is a very thin product. If this should
occur, allow the freezer to run for approximately
30secondsbeforedispensingadditionalproduct.
After a while the operator will sense or feel when
thefreezerisbeginningtofallbehind,andwillslow
down on the rate of draw so as not to exceed the
capacity.
K. Donot operatethefreezerwhen the mixlowlight
isonorwithlessthan1-3/4”(4.4cm)ofmixinthe
hopper. Refill the hopper immediately.
3.5 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content
andquantity andqualityofotheringredientshaveadirect
bearingonthefinishedfrozenproduct.Achangeinfreezer
performance that cannot be explained by a technical
problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. Shake mixes generally
providesatisfactoryproductfrom24°to28°F(-4°to-2°C).
When checking the temperature, stir the thermometer in
the frozen product to read the true temperature.
Old mix or mix that has been stored at elevated tempera-
tureswillproducepoorqualityproductwithabadtasteand
unacceptable appearance. To retard bacteria growth in
dairybasedmixes,thebeststoragetemperaturerangeis
between 36° to 40°F (2.2° to 4.4°C).
Some products tend to foam more than others. If foam
appearsinthehopper,skimoffwithasanitizedutensiland
discard. Periodically, stir the mix in the hopper with a
sanitized utensil to help prevent excess foam.
3.6 REMOVING MIX FROM FREEZER
To remove the mix from the freezer, refer to the following
steps:
A. Removethemixinletregulatorfromthehopperby
pulling straight up.
Figure 3-4 Dispensing Product

11
B. PlacethePowerOFF-ONswitchintheONposition
and push the CLEAN button to rotate the auger.
Allow the mix to agitate in freezer barrel until the
mix has become a liquid, about 5 minutes.
C. Emptymixfromthefreezerbyopeningthespigot
and draining into a tall cup and discarding mix.
Continuedrawingmixintothecupuntilthefreezer
is empty.
D. Fillacleanandsanitizedtallcupwithclean110°F
(43°C)waterandsubmergeblenderagitatorshaft
intowater.Activateblenderbypullingspigottothe
right. Allow blender agitator to run for 10-15
secondes. Repeat using a mild detergent.
E. PushtheCLEANbuttontostoptheaugerrotation.
F. PlacetheBlenderPowerOFF-ONswitchintothe
OFF position and unplug the blender from the
freezer.
G. Place the Power OFF-ON switch inthe OFF
position.
H. Remove the knobs on the front door and remove
the blender assembly and set aside (Fig. 3-5).
Whentheknobs are removed,mixmay dripfrom
the door and barrel into the drip tray.
NOTE
Support the blender with one hand while removing
the knobs on the door to prevent the blender from
dropping.
J. Replace the door knobs on the front door.
K. Remove the clear plastic swing shield from the
blender assembly and clean it (Refer to Section
3.9 - Cleaning the Freezer Parts).
3.7 CLEANING THE FREEZER
NOTE
The frequency of cleaning the freezer and freezer
parts must comply with local health regulations.
After the mix has been removed from the freezer, the
freezermustbecleaned.Tocleanthefreezer,refertothe
following steps:
A. Closethe spigotandfillthe hopperwith2gallons
(7.5 liters) of tap water.
B. PlacethePowerOFF-ONswitchintheONposition
andpresstheCLEANbutton.Theaugerwillstart
to rotate.
C. Allow the water to agitate for approximately 5
minutes. NOTE
Iffreezer isleftinCLEAN formore than20 minutes,
the display will show an error code.
D. Openthespigottodrainthewater.Rememberto
place a bucket or container under the spigot to
catchthewater.Whenthewaterhasdrained,turn
the Power OFF-ON switch to the OFF position.
Allow the freezer barrel to drain completely.
E. RepeatStepsAthroughDusingamilddetergent
solution.
3.8 DISASSEMBLY OF FREEZER PARTS
CAUTION
Hazardous Moving Parts
Revolving auger shaft can grab and cause injury.
Place the Power OFF-ON switch in the OFF posi-
tionbefore disassemblingfor cleaning or servicing.
Inspectionforworn orbrokenparts shouldbemade each
timethefreezerisdisassembled.Allwornorbrokenparts
should be replaced to ensure safety to both the operator
and the customer and to maintain good freezer perfor-
manceandaqualityproduct.Frequencyofcleaningmust
comply with the local health regulations.
To disassemble the freezer, refer to the following steps:
A. Remove hopper cover and drain tray.
B. Removethemixinletregulatorfromthehopperby
pulling straight up.
C. Remove the front door by turning the circular
knobsandthenpullingthefrontdooroffthestuds.
Figure 3-5 Removing Blender

12
D. Push the spigot body through the bottom of the
front door and remove.
E. Removethefrontaugersupportandbushing(Fig.
3-6).
F. Remove the auger assembly from the freezer.
G. Keepthe rear of the augershaft tippedup once it
isclearofthefreezer to avoiddroppingrearseal.
H. Remove the scraper blades and the rear seal
assembly.
I. Wipesocketlubricantfromthedriveend(rear)of
the auger with a cloth or paper towel.
J. Remove all o-rings from parts by first wiping off
the lubricant using a clean paper towel. Then
squeeze the o-ring upward (Fig. 3-7). When a
loop is formed, roll out of the o-ring groove.
CAUTION
Do not use any type of sharp object to remove the
o-rings.
3.9 CLEANING THE FREEZER PARTS
Place all loose parts in a pan or container and take to the
wash sink for cleaning. To clean freezer parts refer to the
following steps:
A. Place all parts in warm mild detergent water and
clean with brushes provided. Rinse all parts with
clean hot water. NOTE
If a dishwasher is used, product damage is likely to
occur.
B. Wash the hopper and freezer barrel with warm
detergentwaterand brushesprovided. (Fig. 3-8)
C. Cleantherearsealsurfacesfromtheinsideofthe
freezer barrel with warm detergent water.
D. Cleanthedriptrayandinsertwithasoapsolution.
Rinse with clean hot water.
3.10 SANITIZE FREEZER AND FREEZER
PARTS
A. Use a sanitizing solution mixed according to
manufacturer's instructions to provide 100 parts
per million strength solution. Mix sanitizer in
quantities of no less than 2 gallons (7.5 liters) of
120°F water. Allow the sanitizer to contact the
surfacestobesanitizedfor5minutes.Anysanitizer
must be used only in accordance with the
manufacturer's instructions.
B. Place all parts in the sanitizing solution, then
remove and let air dry.
Figure 3-8 Cleaning Freezer Barrel
Figure 3-7 Removing O-Ring

13
C. Usingthis sanitizingsolution andthe large barrel
brush provided, sanitize the rear of the barrel by
dipping the brush in the sanitizing solution and
brushing the rear of the barrel.
3.11 ASSEMBLY OF FREEZER
Toassemblethefreezerparts,refertothefollowingsteps:
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that lu-
bricantsused onfoodprocessingequipment be cer-
tifiedfor thisuse. Use lubricantsonlyin accordance
with the manufacturer’s instructions.
A. Assemble all o-rings onto parts dry, without
lubrication. Then apply a thin film of sanitary
lubrication (Petrol Gel or equivalent) to exposed
surfacesoftheo-rings.Applyathinfilmofsanitary
lubricant to metal part of rear seal. Also apply a
thinfilmofsanitarylubricantinsideandoutsideof
the front auger support bushing.
B. Assemble the rear seal onto the auger with the
largeendtotherear.Besuretheo-ringisinplace
before installing the rear seal.
C. Lubricate the auger drive (rear) with a small
amountofwhitesocketlubricant(splinelubricant).
A small container of socket lubricant is shipped
with the freezer.
D. Install the two plastic scraper blades onto the
auger and insert it into the freezer barrel.
CAUTION
Do not place the mix inlet regulator into the hopper
before installing the auger.Attempting to install the
auger with the mix inlet regulator in place will dam-
age the mix inlet regulator.
E. Rotatetheaugeruntiltheaugerengagesthedrive
shaft.
F. Install the auger support bushing into the front of
the auger.
G. Install the spigot body with o-ring into the front
doorfrombottom.Pushstraightupuntilthespigot
is in place.
H. Install the front door on the freezer.
I. Install the blender assembly onto the front door
studsandtightenthecircularknobsonthefreezer
studs.
CAUTION
Overtightening or uneven tensioning of circular
knobs may cause damage to front door and cause
leaking. Hand tighten circular knobs evenly.
J. Look for the proper seal between the freezer
barrel, o-ring, and front door.
K. Install the mix inlet regulator into the freezer with
the air tube to the front of the freezer.
L. Install hopper cover and drain tray.
3.12 ROUTINE CLEANING
To remove spilled or dried mix from the freezer exterior,
simplywash inthe direction ofthe finishwith warmsoapy
water and wipe dry. Do not use highly abrasive materials
as they will mar the finish.
It is recommended that a maintenance schedule be fol-
lowed to keep the freezer clean and operating properly.
CLEANING AND SANITIZING INFORMATION
Shake freezers require special consideration when it
comes to food safety and proper cleaning and sanitizing.
The following information has been compiled by Purdy
ProductsCompany,makers of Stera-Sheen Green Label
Cleaner/Sanitizerandspecificallycoversissuesforclean-
ingandsanitizingfrozendessertmachines.Thisinforma-
tionismeanttosupplementacomprehensivefoodsafety
program.
SOIL MATERIALS ASSOCIATED WITH FROZEN
DESSERT MACHINES
MILKFAT/BUTTERFAT – As components of ice cream/
frozen custard mix, these soils will accumulate on the
interior surfaces of the machine and its parts. Fats are
difficulttoremoveandhelpattributetomilkstonebuild-up.
MILKSTONE – Is a white/gray film that forms on equip-
mentandutensilsthatcomeincontactwithdairyproducts.
Thesefilmswillaccumulateslowlyonsurfacesbecauseof
ineffectivecleaning,useof hardwater,orboth. Milkstone
is usually a porous deposit, which will harbor microbial
contaminants and eventually defy sanitizing efforts.
Figure 3-9 Auger and Door Assembly

14
Once milkstone has formed, it is very difficult to remove.
Without using the correct product and procedure, it is
nearly impossible to remove a thick layer of milkstone.
(NOTE: general purpose cleaners DO NOT remove
milkstone.) This can lead to high bacteria counts and a
food safety dilemma.
IT IS BEST TO CONTROL MILKSTONE ON A DAILY
BASISBEFOREITCANBECOMEASIGNIFICANTFOOD
SAFETY PROBLEM.
Inadditiontofoodsafety,milkstonecancausepremature
weartomachinepartswhichcanaddtocostsforreplace-
ment parts or possibly more expensive repairs if worn
machine parts are not replaced once they have become
excessivelyworn.
IMPORTANT DIFFERENCES BETWEEN CLEANING
ANDSANITIZING
CLEANING vs. SANITIZING
Itisimportanttodistinguishbetweencleaningandsanitiz-
ing. Although these terms may sound synonymous, they
are not. BOTH are required for adequate food safety and
proper machine maintenance.
CLEANING
• Is the removal of soil materials from a surface.
• Is a prerequisite for effective sanitizing.
NOTE
An UNCLEAN surface will harbor bacteria that can
defy sanitizing efforts.
Bacteria can develop and resist sanitizing efforts within a
layer of soil material (milkstone). Thorough cleaning pro-
cedures that involve milkstone removal are critical for
operators of frozen dessert machines.
SANITIZING
• Kills bacteria.
• Can be effective on clean surfaces only.
NOTE
Using a SANITIZER on an unclean surface will not
guaranteeacleanandsafe frozendessertmachine.
PROPERDAILY MAINTENANCE: THE ONLY WAY TO
ASSUREFOODSAFETYANDPRODUCTQUALITY
Proper daily maintenance can involve a wide variety of
products and procedures. Overall, the products and pro-
cedures fall into three separate categories. (Please note
that this is a brief overview intended for informational
purposesonly.)
1. CLEANING–Thisinvolvesdrainingmixfromthe
freezerbarrelandrinsingthemachinewithwater.
Next,acleanerisrunthroughthemachine.Then,
the machine is disassembled and removable
parts are taken to the sink for cleaning.
2. MILKSTONE REMOVAL – Since almost all
cleaners do not have the ability to remove
milkstone, the use of a delimer becomes
necessary. Although this procedure may not be
needed on a daily basis, it will usually follow the
cleaning procedure. It requires letting a delimer
solution soak in the machine for an extended
periodoftime.Individualpartsarealsosoakedin
adelimingsolutionforanextendedperiodoftime
(more about delimers in Additional Information).
3. SANITIZING–Afterthemachinehasbeencleaned
and contains no milkstone, the machine is
reassembled. Then an FDA approved sanitizing
solutionisrunthroughthemachinetokillbacteria.
The machine is then ready for food preparation.
As a recommended cleaner and sanitizer for your frozen
dessertmachine,Stera-Sheenhasproventobeoneofthe
best daily maintenance products for:
• CLEANING – Thorough removal of all solids
including butterfat and milk fat.
• MILKSTONE REMOVAL – Complete removal of
milkstone.
• SANITIZING – FDA approved no rinse sanitizer
for food contact surfaces.
ADDITIONALINFORMATION
THE USE OF DELIMERS
A delimer is a strong acid that has the ability to dissolve
milkstone. This type of chemical may become necessary
once high levels of milkstone have developed. While
these products are very effective for removing HIGH
levels of milkstone, they are not ideal for two reasons:
1. PRODUCTSAFETY–Strongacidsaredangerous
chemicals and handling them requires safety
2. MACHINE DAMAGE – Strong acids will attack
metal and rubber causing premature wear of
parts. The use of a delimer needs to be closely
monitored to avoid damage to machine surfaces
and parts.
With proper daily use of Stera-Sheen or its equivalent,
there is no need for the use of a DELIMER.
DO NOT USE BLEACH
• BLEACH HAS ABSOLUTELY NO CLEANING
PROPERTIES.
• BLEACHISCORROSIVE.Itcanandwilldamage
components of the machine causing premature
wear and metal corrosion.
GENERAL PURPOSE CLEANERS
General purpose cleaners do not have the ability to re-
move milkstone. Milkstone will become a problem if not
remedied with additional products and procedures.